1 files changed, 119 insertions, 0 deletions
diff --git a/plug-ins/common/goat-exercise.c b/plug-ins/common/goat-exercise.c
new file mode 100644
index 0000000..b01d938
--- /dev/null
+++ b/plug-ins/common/goat-exercise.c
@@ -0,0 +1,119 @@
+/*
+ *  Goat exercise plug-in by Øyvind Kolås, pippin@gimp.org
+ */
+
+/*
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <libgimp/gimp.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+
+#define PLUG_IN_PROC "plug-in-goat-exercise"
+
+
+/* Declare local functions.
+ */
+static void   query       (void);
+static void   run         (const gchar      *name,
+                           gint              nparams,
+                           const GimpParam  *param,
+                           gint             *nreturn_vals,
+                           GimpParam       **return_vals);
+
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+  NULL,  /* init_proc  */
+  NULL,  /* quit_proc  */
+  query, /* query_proc */
+  run,   /* run_proc   */
+};
+
+MAIN ()
+
+
+static void
+query (void)
+{
+  static const GimpParamDef args[] =
+  {
+    { GIMP_PDB_INT32,    "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+    { GIMP_PDB_IMAGE,    "image",    "Input image (unused)"         },
+    { GIMP_PDB_DRAWABLE, "drawable", "Input drawable"               }
+  };
+
+  gimp_install_procedure (PLUG_IN_PROC,
+                          N_("Exercise a goat"),
+                          "takes a goat for a walk",
+                          "Øyvind Kolås <pippin@gimp.org>",
+                          "Øyvind Kolås <pippin@gimp.org>",
+                          "21march 2012",
+                          N_("Goat-e_xercise"),
+                          "RGB*, INDEXED*, GRAY*",
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (args), 0,
+                          args, NULL);
+
+  gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters");
+}
+
+static void
+run (const gchar      *name,
+     gint              nparams,
+     const GimpParam  *param,
+     gint             *nreturn_vals,
+     GimpParam       **return_vals)
+{
+  static GimpParam   values[1];
+  GimpPDBStatusType  status = GIMP_PDB_SUCCESS;
+  gint32             drawable_id;
+  gint               x, y, width, height;
+
+  INIT_I18N();
+  gegl_init (NULL, NULL);
+
+  *nreturn_vals = 1;
+  *return_vals = values;
+
+  values[0].type          = GIMP_PDB_STATUS;
+  values[0].data.d_status = status;
+
+  drawable_id = param[2].data.d_drawable;
+
+  if (gimp_drawable_mask_intersect (drawable_id, &x, &y, &width, &height))
+    {
+      GeglBuffer *buffer;
+      GeglBuffer *shadow_buffer;
+
+      buffer        = gimp_drawable_get_buffer (drawable_id);
+      shadow_buffer = gimp_drawable_get_shadow_buffer (drawable_id);
+
+      gegl_render_op (buffer, shadow_buffer, "gegl:invert", NULL);
+
+      g_object_unref (shadow_buffer); /* flushes the shadow tiles */
+      g_object_unref (buffer);
+
+      gimp_drawable_merge_shadow (drawable_id, TRUE);
+      gimp_drawable_update (drawable_id, x, y, width, height);
+      gimp_displays_flush ();
+    }
+
+  values[0].data.d_status = status;
+  gegl_exit ();
+}